Aside from adding it to the legit detector so that nobody can equip it in the first place, no. Unless you can find somebody who's an expert at Direct X and can reverse engineer precompiled models and textures and possibly pso.exe as well, there's nothing to be done aside from not using it or playing on the Dreamcast.

Well, in DC version the weapon is harmless, so there's no reason to block it in the filter, for a DCv1/v2 team...but only in teams compatible with PC version, so... is there a way to make different filters?